KR20020012102A - Data transmission method for hybrid ARQ type 2/3 on wide-band wireless communication system - Google Patents

Abstract

PURPOSE: A method for processing data for an HARQ(Hybrid Automatic Repeat for request) type II/III in a wideband wireless communication system is provided to decrease an error generation rate of a side information portion by dividing the side information portion and a user data portion and adjusting a coding rate. CONSTITUTION: An RLC(Radio Link Controller) processes data received from an upper layer(or network) and transmits the processed data to a MAC-D(Medium Access Control Dedicated) through a logical channel such as a DTCH(Dedicated Traffic Channel)(401). The RLC generates side information of the processed data and transmits generated side information in parallel to the MAC-D through the logical channel such as the DTCH or a DCCH(Dedicated Control Channel) when the data portion is transmitted to the MAC-D(402). The MAC-D processes the data portion received from the RLC as a node B transport type, and transmits the processed data to a node B through a transport channel such as a DCH(Dedicated Channel)(403). The MAC-D processes the side information portion received from the RLC as the node B transport type and transmits processed information to the node B through the transport channel such as the DCH(404). The node B processes data and side information received from the MAC-D as a wireless transport type, multiplexes the processed data and information to be transmitted to one physical channel such as a DPCH(Dedicated Physical Channel), and transmits the multiplexed data to a UE(User Equipment)(405).

Description

Data transmission method for hybrid ARQ type 2/3 on wide-band wireless communication system}

The present invention relates to a data transmission method for a hybrid automatic retransmission request type 2/3 (Hybrid ARQ (Automatic Repeat for reQuest) type II / III) in a broadband wireless communication system, and more specifically, in North America and Europe. Hybrid ARQ Type II / III for efficient packet data service in next-generation mobile communication based asynchronous wireless communication system (W-CDMA) such as IMT-2000 (International Mobile Telecommunication) and Universal Mobile Telecommunications System (UMTS) In order to implement the present invention, a method of transmitting data using two logical channels and one physical channel (preferably Dedicated Physical Channel (DPCH)) and a program for realizing the method can be read by a computer. It relates to a recording medium that can be.

The terms used in the present invention are defined as follows.

"RNC-Radio Link Controller (RLC)" is a control station-radio link control protocol layer entity.

"RNC-Radio Network Controller-Medium Access Control Dedicated Entity" is an entity dedicated to a control station-media access control protocol layer terminal.

"RNC-Radio Network Controller-Medium Access Control Common / Shared Entity" is a control station-media access control protocol layer terminal shared / shared entity.

"Node B-L1" is a base station-physical channel layer entity.

"UE-L1" is a terminal-physical channel layer entity.

"UE-MAC-C / SH (User Equipment-Medium Access Control Common / SharedEntity)" is a terminal-media access control protocol layer terminal shared / shared entity.

"UE-User Equipment-Medium Access Control Dedicated Entity" is a UE-Media Access Control Protocol layer UE-dedicated entity.

"UE-User Equipment-Radio Link Control (RLC)" is a terminal-radio link control protocol layer entity.

"UE-User Equipment-Radio Resource Control (RRC)" is a terminal-radio resource control protocol layer entity.

"Iub" represents the interface between the control station (RNC) and the base station (Node B).

"Iur" represents an interface between the control station RNC and another control station RNC.

"Uu" represents a radio interface between a base station Node B and a terminal UE.

A "Logical channel" is a logical channel used for exchanging data between an RLC protocol entity and a MAC protocol entity.

A "transport channel" is a logical channel used for exchanging data between a MAC protocol entity and a physical layer.

"Physical channel" is an actual channel used to exchange data between a terminal and a system through a wireless environment.

When transmitting data to a mobile station (UE) in a wireless network of an asynchronous mobile communication system (UTRAN), it is possible to use "Hybrid ARQ type II / III", which has better throughput than "Hybrid ARQ type I".

FIG. 1 is an exemplary configuration diagram of a general broadband wireless communication network (W-CDMA), and illustrates an asynchronous mobile communication system (UTRAN) environment as an example.

As shown in FIG. 1, an asynchronous mobile communication system (UTRAN) includes a mobile station (UE) 100, an asynchronous wireless network 200, and a wireless communication core network (eg, a GSM-MAP core network) ( 300 is organically connected between. Here, the efficient Hybrid ARQ type II / III is a technique applied between the mobile station 100 and the asynchronous wireless network 200, and is a technique used when a retransmission is requested from the receiving side to the transmitting side when there is an error in the received data. .

2 is a detailed configuration example of a general asynchronous mobile communication system (UTRAN), in which "Iu" is an interface between the wireless communication core network 300 and the asynchronous wireless network 200, and "Iur" is an asynchronous wireless network. A logical interface between the control station RNC of 200, and " Iub " represents an interface between the control station RNC and the base station (Node B), respectively. On the other hand, "Uu" represents an air interface between an asynchronous mobile communication system (UTRAN) and a mobile station (UE: User Equipment).

Here, Node B is a logical node that is responsible for radio transmission and reception from or to the UE in one or more cells.

In general, the asynchronous mobile communication system (UTRAN: UMTS Terrestrial Radio Access Network) checks the data transmitted from the transmitting side to the receiving side and requests retransmission to the transmitting side if there is an error in the received data. There is an Automatic Repeat ReQuest (ARQ) method, which is divided into three types: Automatic Retransmission Request (ARQ) types I, II, and III. The technical characteristics of each method are as follows.

Automatic retransmission request (ARQ) is an error control protocol that automatically detects that an error occurred during transmission and receives the block in which the error occurred. That is, as one of the error control methods in data transmission, when an error is detected, the system automatically generates a retransmission request signal and retransmits it from the wrong signal.

In the asynchronous mobile communication system (UTRAN), an ARQ scheme for requesting retransmission of an error-prone packet may be used to transmit packet data.

However, due to the instability of the wireless channel environment, when using this ARQ scheme, the number of retransmission requests may increase, thereby reducing throughput, which is an amount of data that can be sent in unit time. Therefore, ARQ can be used together with FEC (Forward Error Correction Coding) to reduce this problem. This is called Hybrid ARQ.

Hybrid ARQ has types I, II, and III according to the scheme.

In the case of Type I, one coding rate (e.g., No Coding, Rate 1/2, Rate 1/3, among convolutional coding) depending on the channel environment or required Quality of Service (QoS) If it is determined, it continues to use it, and the receiving end removes the previously received data when the retransmission request is made, and the transmitting end retransmits it at the previously transmitted coding rate. In this case, since the coding rate does not change according to the variable channel environment, the throughput may be reduced compared to Types II and III.

In case of Type II, when the receiver requests data retransmission, it does not remove it, but stores it in a buffer and combines it with the retransmitted data. That is, the first coding rate is transmitted at a high coding rate, and when retransmission is requested, the coding rate is transmitted at a lower coding rate, thereby combining with previously received data. performance can be significantly improved compared to Type I by performing maximal ratio combining. For example, if there is a mother code having a convolutional coding rate of 1/4, the punching rate is used to make a coding rate of 8/9, 2/3, 1 A coding rate such as / 4 can be created, which is called a rate compatible punctured convolutional (RCPC) code.

Meanwhile, a code that can be obtained by punching a turbo code is referred to as a Rate Compatible Punctured Turbo (RCPT) code. In the first transmission, if the transmission rate is transmitted at a coding rate of 8/9, and the retransmission version is ver (0), the CRC (Cyclic Redundancy Check) is checked and an error is found. It will store it in a buffer and request a retransmission. In this case, when retransmission is performed, the coding rate is transmitted at a coding rate of 2/3, and the version at this time is ver (1). Here, the receiving end combines ver (0) stored in the buffer and ver (1) received, and decodes this value to check the CRC. Repeat this process until no error is found in the CRC test, and the recently transmitted ver (n) is combined with the previously transmitted ver (n-a) (0 <a ≦ n).

In case of Type III, it is almost the same as Type II. The difference is that before recombining the retransmitted data ver (n) with ver (na), first decode and then check the CRC. Send this value to the upper layer. If an error occurs, it is combined with ver (n-a) and the CRC is checked to determine whether to retransmit.

As such, the asynchronous mobile communication system (UTRAN) uses Hybid ARQ type II / III for efficient data transmission. Hybid ARQ type II / III is initially coded at a high coding rate, and when retransmitted, is coded at a low coding rate and combined at the receiving end. This is a way to increase throughput. Therefore, in order to combine, the protocol data unit (PDU) sequence number, the number of retransmissions, and the version must be known in advance, and this information must be guaranteed using a low coding rate regardless of the retransmission coding rate.

In a method of implementing a hybrid ARQ type II / III in an asynchronous mobile communication system (UTRAN), downlink (Downlink) through a downlink shared channel (DSCH) and uplink (TDD) of time division duplex (uplink) In this case, there is a method of serial transmission by creating a data portion transmitted through an uplink shared channel (USCH) and a portion corresponding to information (data sequence number and data version, etc.) of the data. In the case of processing Hybrid ARQ type II / III in this manner, there is a problem in that hardware complexity increases.

In Hybrid ARQ type II / III, data coding rates of the transmission data portion and the information portion of the transmission data are different. That is, the data portion of the data is processed and stored at a coding rate of A, and the data portion is processed and stored at a coding rate of B, and stored at the point where each portion should be sent. In case of downlink, the data must be carried on the downlink shared channel (DSCH) and uplink of the time division duplex (TDD) on the uplink shared channel (USCH). Therefore, there is a problem in that the complexity is increased because hardware must be configured to store coded data and to load data for use at a necessary time.

In order to solve the above problems, the present invention provides two logical channels and one physical channel in Hybrid ARQ Type II / III for efficient packet data service in a wireless communication system. It is an object of the present invention to provide a data transmission method for reducing hardware complexity of a transmitting physical channel using a dedicated physical channel (DPCH) and a computer-readable recording medium recording a program for realizing the method. .

1 is an exemplary configuration diagram of a general broadband wireless communication network (W-CDMA).

2 is a detailed configuration example of a general asynchronous mobile communication system (UTRAN).

3A is a diagram illustrating an embodiment of a data transmission method when a MAC-D and a MAC-C operate in different systems when a transmitting side is a wireless network according to the present invention.

3B is a diagram illustrating another embodiment of a data transmission method when MAC-D and MAC-C operate in the same system when the transmitting side is a wireless network according to the present invention;

4A is a flowchart illustrating a data transmission method when the MAC-D and the MAC-C operate in different systems when the transmitting side is a wireless network according to the present invention.

4B is a flowchart illustrating another embodiment of a data transmission method when MAC-D and MAC-C operate in the same system when the transmitting side is a wireless network according to the present invention.

5A is a detailed flowchart illustrating a data transmission process in an RLC during operation in each part of a wireless network according to an embodiment of the present invention.

5B is a detailed flowchart illustrating a data transmission process in MAC-D during operation in each part of a wireless network according to an embodiment of the present invention.

5C is a detailed flowchart illustrating a data transmission process in Node B during operation in each part of a wireless network according to an embodiment of the present invention.

FIG. 6A is a detailed flowchart of a data transmission process in Layer 1 during operation in each part of a mobile station according to an embodiment of the present invention; FIG.

6B is a detailed flowchart illustrating a data transmission process in MAC-D during operation in each part of a mobile station according to an embodiment of the present invention.

6C is a detailed flowchart of a data transmission process in RLC during operation in each part of a mobile station according to an embodiment of the present invention;

6D is a detailed flowchart of a data transmission process in RRC during operation in each part of a mobile station according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: mobile station 200: asynchronous wireless network

300: wireless communication core network

In order to achieve the above object, the present invention provides a MAC (Medium Access Control) method in a data transmission method when hybrid ARQ type II / III (hybrid ARQ type II / III) is applied for efficient data transmission in a wireless communication system. The MAC-C (Medium Access Control Common, hereinafter referred to as "MAC-C") handling the common channel portion in the "MAC" layer, and the Medium Access Control Dedicated (MAC-D), handling the regular user portion In the case where the " MAC-D ") are separated from each other and exist in different wireless networks, the " MAC-D " is generated by generating data and additional information in a radio link control (RLC) layer of the wireless network. Transmitting data and additional information to the MAC-D via a logical channel; A second step of transmitting data and additional information from the MAC-D to a Node B through a transmission channel; And a third step in which the base station Node B processes the data and the additional information in the form of wireless transmission, and then multiplexes and transmits the data and the additional information to the mobile station through a physical channel.

In addition, the present invention comprises a fourth step of the mobile station interprets the received data and the additional information to inform the wireless network of the status of the received data to request retransmission; And a fifth step of repeatedly performing the first to third steps by the asynchronous radio network according to the retransmission request from the mobile station.

In addition, the present invention for achieving the above object is a MAC (Medium Access Control) in the data transmission method in the hybrid ARQ type II / III (Hybrid ARQ type II / III) application for efficient data transmission in a wireless communication system , MAC-C (Medium Access Control Common, hereinafter referred to as " MAC-C ") that processes the common channel portion in the " MAC " layer, and Medium Access Control Dedicated, which processes the end-user portion, In the case where the " MAC-D " is separated from each other and exists in the same wireless network, the " MAC-D " is generated by generating data and additional information in a radio link control (RLC) layer of the wireless network. Transmitting data and additional information to the MAC-D via a logical channel; A second step of transmitting data and additional information from the MAC-D to a Node B through a transmission channel; And a third step of processing the data and the additional information in the form of wireless transmission by the base station Node B and multiplexing the same to transmit them to the mobile station through a physical channel.

In addition, the present invention comprises a fourth step of the mobile station interprets the received data and the additional information to inform the wireless network of the status of the received data to request retransmission; And a fifth step of repeatedly performing the first to third steps by the asynchronous radio network according to the retransmission request from the mobile station.

The present invention for achieving the above object is, in the wireless communication system having a processor for data transmission in the hybrid ARQ type II / III (Hybrid ARQ type II / III) application for efficient data transmission, MAC ( Medium Access Control Common ("MAC-C") that handles the common channel portion in the Medium Access Control ("MAC") layer and Medium Access Control that handles the normal user portion. When Control Dedicated (hereinafter, referred to as "MAC-D") is separated from each other and exists in different wireless networks, data and additional information generated by generating data and additional information in a radio link control (RLC) layer of the wireless network are added. A first function of transmitting information to the MAC-D via a logical channel; A second function of transmitting data and additional information in the MAC-D to a Node B through a transmission channel; And a computer-readable recording medium having recorded thereon a program for realizing a third function of processing the data and the additional information in the form of wireless transmission and then multiplexing the data and the additional information to the mobile station through a physical channel. to provide.

In addition, the present invention provides a mobile station comprising: a fourth function of requesting retransmission by informing the wireless network of the state of the received data by analyzing the received data and additional information; And a computer readable recording medium having recorded thereon a program for further realizing a fifth function for the asynchronous radio network to repeat the first to third steps in response to a retransmission request from the mobile station.

The present invention for achieving the above object is, in the wireless communication system having a processor for data transmission in the hybrid ARQ type II / III (Hybrid ARQ type II / III) application for efficient data transmission, MAC ( Medium Access Control Common ("MAC-C") that handles the common channel portion in the Medium Access Control ("MAC") layer and Medium Access Control that handles the normal user portion. When Control Dedicated (hereinafter referred to as "MAC-D") is separated from each other and exists in the same wireless network, data and additional information are generated in an RLC (Radio Link Control) layer of the wireless network. A first function of transmitting the generated data and additional information to the MAC-D through a logical channel; A second function of transmitting data and additional information in the MAC-D to a Node B through a transmission channel; And a computer-readable recording medium having recorded thereon a program for realizing a third function of processing data and additional information in the form of wireless transmission at the base station Node B and multiplexing the data and additional information to a mobile station through a physical channel. .

In addition, the present invention provides a mobile station comprising: a fourth function of requesting retransmission by informing the wireless network of the state of the received data by analyzing the received data and additional information; And a computer readable recording medium having recorded thereon a program for further realizing a fifth function for the asynchronous radio network to repeat the first to third steps in response to a retransmission request from the mobile station.

The present invention is a technique using Hybrid ARQ type II / III when a receiving side requests retransmission when there is an error in data received in a system consisting of an asynchronous mobile station, an asynchronous wireless network and a GSM-MAP core network.

In the method proposed by the present invention, data and side information are respectively generated in the RLC and transmitted to the Node B through the inside of the wireless network, and the data and side information are transmitted. In operation B, Node B is transmitted to a mobile station through one physical channel DPCH. Through this, in particular, it is possible to solve the problem of increasing the complexity of the physical channel of the transmitting side of the conventional technology.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the method proposed in the present invention, data and side information are respectively generated by the RLC and transmitted to the Node B through the inside of the wireless network, and the data and side information are transmitted. In operation B, Node B is transmitted to a mobile station through one physical channel DPCH.

As shown in Figs. 3a and 3b, the structure of the asynchronous wireless network is largely divided into two. That is, as illustrated in FIG. 3A, the MAC-C processing a common channel portion (Broadcast channel, RACH (Random Access Channel), Pilot Channel, etc.) and the MAC-D processing a general user portion (Dedicated channel, etc.) It is divided into a case where the system is separated from each other and a case where the MAC-C and the MAC-D are in the same system as shown in FIG.

As shown in FIG. 3A, when the transmitting side is a wireless network, when the MAC-D and the MAC-C operate in different systems, description of each signal is as follows.

"301" is an RRC control signal.

"302" is a signal that transmits data received from the upper layer (network) to the MAC-D, and the data is MAC-D through a logical channel such as a dedicated traffic channel (DTCH). To send.

"303" is a signal for transmitting additional information (information of signal "302", that is, sequence number, version number, etc.) to MAC-D, and is a logical channel such as DTCH or dedicated control channel (DCCH). Additional information (for example, sequence number, version numbere, etc.) is transmitted through MAC-D.

"304" is a signal for transmitting data received as a signal "302" to Node B, and transmits data through a transport channel such as a dedicated channel (DCH). Transmit to Node B.

"305" is a signal for transmitting side information received as a signal "303" to Node B, and transmits side information through a transport channel such as a DCH. Transmit to Node B.

"306" is a signal for transmitting data by processing data and side information received as signals "304" and "305" in the form of wireless transmission in Node B, such as DPCH and the like. Data and side information are transmitted to the receiver through a physical channel.

As shown in FIG. 3B, when the transmitting side is a wireless network, when the MAC-D and the MAC-C operate in the same system, the description of each signal is as follows.

"311" is an RRC control signal.

"312" is a signal for transmitting data received from the upper layer (network) to the MAC-D, and transmits data to the MAC-D through a logical channel such as DTCH.

&Quot; 313 " is a signal for transmitting additional information (information of signal " 312 ", that is, sequence number, version number, etc.) to the MAC-D, and can be provided with additional information (through logical channels such as DTCH or DCCH). send side information) to MAC-D.

"314" is a signal that transmits data received as signal "312" to Node B, and transmits data to Node B through a transport channel such as a DCH. To b).

"315" is a signal for transmitting side information received as a signal "313" to Node B. The side information is transmitted through a transport channel such as a DCH. Transmit to Node B.

"316" is a signal that transmits data and side information received as signals "314" and "315" in the form of wireless transmission at the Node B, and transmits data. Data and side information are transmitted to the receiver through a physical channel.

In the wireless network, when MAC-D and MAC-C are in different systems (see FIG. 3A), the data transmission process is as shown in FIG. 4A, and when MAC-D and MAC-C are in the same system (FIG. 3B). Data transmission process) is as shown in FIG. 4B. At this time, the functions of the signals and the information included in the data transmission are shown in Table 1 below.

signal function Included Information 401 Receive data processed in MAC-D transmission form by upper layer (network) and transmit to MAC-D through logical channel such as DTCH data, etc. 402 After generating side information that is information corresponding to the data of the signal "401", it is processed in the form of MAC-D transmission through a logical channel such as DTCH or DCCH and then transmitted to MAC-D. side information (sequence number, version number, etc.) 403 -After processing the signal "401" received from the RLC in the form of Node B transmission, it can be transmitted to Node B through a transport channel (transport channel) such as DCH-can be transmitted to Node B including the signal "404" -data, TFI, etc.-When transmitted in combination with signal "404": data, TFI (value for data), side information, TFI (value for side information), etc. 404 After processing the signal " 402 " received from the RLC in the form of Node B transmission, it is transmitted to Node B through a transport channel such as a DCH. This signal can be transmitted to the Node B included in the signal " 403 ". has exist side information, TFI, etc. 405 After processing the signals "401" and "402" received from the MAC-D in the form of wireless transmission, the signals are transmitted to the mobile station through a physical channel such as DPCH. data, side information, TFCI, etc. 406 Part of the received data, which contains the signal "404" and the data discriminator, are transmitted to the MAC-D through a transport channel such as a DCH. side informaiton, data identifier, etc. 407 The information received by the signal "406" is transmitted to the RLC through a logical channel such as DTCH or DCCH. side informaiton, data identifier, etc. 408 Interpret the information received with signal "407" and send the result to RRC via Control SAP specific primitives sequence number, version number, data identifier, etc. 409 Information received on signal "408" is sent to L1 via Control SAP specific primitives sequence number, version number, data identifier, etc. 410 The data portion stored in the signal "405" is processed and transmitted to the MAC-D through a transport channel such as a DCH. data, etc. 411 Data received from signal "410" is transmitted to RLC through logical channel such as DTCH data, etc. 412 Sends the reception status of data received by the signal "411" to the sending side (wireless network) Reception status result (ACK / NACK), etc.

In Table 1, the RLC of the wireless network receives the signal "412" and decides whether to retransmit the data. If the data is to be retransmitted, the RLC of the wireless network executes the signal "401" again.

Now, referring to FIGS. 4A and 4B for a data transmission process when the MAC-D and the MAC-C operate in different systems when the transmitting side is a wireless network, or when the MAC-D and the MAC-C operate in the same system. Will be explained.

As shown in Figures 4a and 4b, the data transmission method according to the present invention, the data (data) generated by the radio network RLC and the information portion corresponding to the data (data) created by the RLC data (data) And side information are transmitted to Node B of wireless network via MAC-D, respectively, and after processing data and side information at Node B In addition, the system transmits the signal to the mobile station through one physical channel (DPCH) by multiplexing, and receives the information from the mobile station to process the ARQ operation.

In detail, first, the RLC processes data received from an upper layer (or a network) and transmits the data to the MAC-D through a logical channel such as DTCH (401).

Subsequently, the RLC creates additional information (sequence number, version number, etc.) of the data processed in step 401, and logical channels such as DTCH or DCCH in parallel when the data portion is transmitted to MAC-D. In operation 402, the controller transmits the MAC-D through a logical channel.

Next, the MAC-D processes the data portion received from the RLC in the form of Node B transmission and transmits the data portion to the NodeB through a transport channel such as a DCH (403). In this case, even when the MAC-D receives the data portion and the side information portion together in the RLC or separately, the MAC-D may include the data portion and the side information portion according to the upper layer control signal. It can be processed in the form of Node B (Node B) transmission to combine the one signal and transmit to Node B (Node B).

Subsequently, the MAC-D processes the side information portion received from the RLC in the form of Node B transmission and transmits it to Node B through a transport channel such as a DCH (404). ).

Subsequently, Node B processes data and side information received from MAC-D in the form of wireless transmission, and multiplexes them to be transmitted on one physical channel such as DPCH. Transmit to mobile station UE (405).

Subsequently, the mobile station UE stores the data portion of the received data in the layer 1 buffer, and processes the side information portion in the form of transmission to the MAC-D. The data identifier is transmitted to the MAC-D of the mobile station through a transport channel such as a DCH together with the data identifier (time information indicating when data currently entered into the mobile station enters layer1) (406).

Next, the MAC-D of the mobile station processes side information (side information, data identifier, etc.) received from layer 1 in the form of RLC transmission to RLC through a logical channel such as DTCH or DCCH. Transmit (407).

Subsequently, the RLC of the mobile station interprets the received data, extracts a sequence number, a version number, and a data discriminator, and then uses the RRC as a parameter of the CRLC-HARQ-IND primitive through the control SAP defined between the RLC and the RRC. 408.

Then, the RRC of the mobile station is a CPHY-HARQ-REQ primitive having parameters of sequence number, version number, and data identifier of the CRLC-HARQ-IND primitive, via Control SAP defined between RRC and layer 1 Is transmitted to layer 1 (409).

Subsequently, if the signal received from the RRC corresponds to the information of the data stored therein, the layer 1 of the mobile station processes the stored data according to the received signal and performs MAC-D transmission. Processing is transmitted to the MAC-D through a transport channel such as a DCH (410).

Next, the MAC-D of the mobile station processes the received data as RLC data and transmits the received data to the RLC through a logical channel such as DTCH (411).

Finally, the RLC of the mobile station reports (ACK, NACK or report) the status of the received data to the wireless network (412). Then, the RLC of the wireless network determines whether to retransmit according to the report of the received mobile station, and if retransmission is performed again from the step "401".

A description of each part of generating and transmitting such a signal will be described in more detail with reference to FIGS. 5A to 5C and 6A to 6D.

5A through 5C are for the operation of each part of the asynchronous radio network, and FIGS. 6A through 6D are for each part of the asynchronous mobile station.

5A is a detailed flowchart illustrating a data transmission process in an RLC during operation in each part of a wireless network according to an embodiment of the present invention.

As shown in FIG. 5A, in an RLC of an asynchronous wireless network for supporting Hybrid ARQ type II / III, after initializing a call (501), data is received from a higher level (or network) (502). In operation 503, it is determined whether the received data is traffic data or data created according to an automatic retransmission request format.

As a result of the determination, if the received data is traffic data or data made according to an automatic retransmission request format, the received data is processed in the form of transmission data (504), and additional information of the received data (data) is received. Side information is extracted (505) and processed in the form of transmission data (506). In this case, the data processed in the transmission form is transmitted to the MAC-D through a logical channel such as DTCH and side information is transmitted through a logical channel such as DCCH or the like. Or, data and side information processed in a transmission form are transmitted to the MAC-D through a logical channel such as DTCH (508).

That is, the RLC in the asynchronous wireless network for supporting Hybrid ARQ type II / III determines whether the data received from the upper layer is the data created according to the traffic data or the automatic retransmission request format. If the data is determined according to the traffic data or automatic retransmission request format, it is processed in the form of MAC-D transmission, and additional information (sequence number, version number, etc.) of the data is also MAC. -D processing in the form of transmission, transmitting the data (data) processed in the form of transmission to the MAC-D through a logical channel such as DTCH, and DTCH information portion of the data (data) processed in the form of transmission Or, it transmits to MAC-D in parallel with data through a logical channel such as DCCH.

As a result of the determination, if the received data is not traffic data or data made according to an automatic retransmission request format, the received data is processed in the form of transmission data (507) and processed in the form of transmission. The data is transmitted to the MAC-D, respectively (508).

5B is a detailed flowchart illustrating a data transmission process in MAC-D during operation in each part of a wireless network according to an embodiment of the present invention.

As shown in FIG. 5B, in MAC-D of an asynchronous wireless network for supporting Hybrid ARQ type II / III, after initializing a call (511), receiving data (512) from the RLC and receiving the data (512). (data) is processed in the Node B transmission form (513), and the data (data) processed in the transmission form is transmitted to the Node B (Node B) through a transport channel (transport channel) such as DCH ( 514).

When the upper layer control signal or the data portion and the data information portion are received together, the MAC-D converts the data portion and the data information portion to the node B. ) Can be processed in the form of transmission and combined into one signal to be transmitted to Node B.

5C is a detailed flowchart illustrating a data transmission process in Node B during operation in each part of a wireless network according to an embodiment of the present invention.

As shown in FIG. 5C, in a Node B of an asynchronous wireless network for supporting Hybrid ARQ type II / III, after initiating a call (521), data is received from MAC-D ( In operation 523, it is determined whether the data received by the higher layer information or the received information such as the received data is the data made according to the traffic data or the automatic retransmission request format.

As a result of the determination, when the received data is traffic data or data made according to an automatic retransmission request format, the received data is processed according to the received TFI and layer 1 control information. If the received data is side information (524), the received data is processed (525) according to the received TFI and Layer 1 control information. After muxing data and side information (526), the multiplexed result is transmitted to a mobile station (UE) through a physical channel such as DPCH (527).

6A is a detailed flowchart illustrating a data transmission process in Layer 1 during operation in each part of a mobile station according to an embodiment of the present invention.

As shown in FIG. 6A, in Layer 1 of an asynchronous mobile station for supporting Hybrid ARQ type II / III, after initiating a call (601), data is transmitted from a wireless network through a physical channel such as DPCH. data is received (602), the data portion and the side information portion are separated from the received data (data) (603), and the separated data is the data (data) or additional information. It is determined whether the information is (side information) (604).

As a result of determination, when the separated data is side information, after processing the data in the form of MAC-D transmission (609), the processed data (transmission data) such as DCH ( A transport channel is transmitted to the MAC-D (610).

As a result of the determination, when the separated data is data, the data is stored in a buffer of layer 1 (605), and a higher layer signal is received (606). In step 607, the received signal is analyzed whether the received signal corresponds to a stored data.

As a result of the analysis, if the signal is a stored data, a layer 1 operation (decoding or combine with past data) is performed according to the signal, and the data is processed in the form of MAC-D transmission ( In operation 610, the processed data is transmitted to the MAC-D through a transport channel such as a DCH.

6B is a detailed flowchart illustrating a data transmission process in MAC-D during operation in each part of a mobile station according to an embodiment of the present invention.

As shown in Fig. 6B, in MAC-D of an asynchronous mobile station for supporting Hybrid ARQ type II / III, after initializing a call (611), data is received from Layer 1 (Layer 1) ( 612) In processing the received data in the form of RLC transmission (613), and transmitting the data processed in the form of transmission to the RLC, the data processed in the transmission form is side information (side information). ) Is transmitted to the RLC through a logical channel such as DTCH or DCCH, and if the data processed in the transmission form is user data, such as DTCH In operation 614, the RLC is transmitted through a logical channel.

6C is a detailed flowchart illustrating a data transmission process in RLC during operation in each part of a mobile station according to an embodiment of the present invention.

As shown in FIG. 6C, in the RLC of the asynchronous mobile station for supporting Hybrid ARQ type II / III, after initializing the call (621), data is received from the MAC-D (622) and the received data ( It is determined whether data is data or side information (623).

As a result of determination, when the received data is side information, necessary information (sequence number, version number, etc.) is extracted from the side information (628), and the extracted information and the data discriminator are RRC. After processing in the transmission form (629), the data (sequence number, version number, data identifier) processed in the transmission form is transmitted to the RRC through a specific primitive (CRLC-HARQ-IND) of the Control SAP (630).

As a result of the determination, when the received data is data, the data is processed in the form of network transmission (624) and transmitted to the network (or higher layer) (627).

Then, the status of the received signal is reported as an asynchronous wireless network (625) and transmitted to the RLC of the asynchronous wireless network (626).

6D is a detailed flowchart illustrating a data transmission process in RRC during operation in each part of a mobile station according to an embodiment of the present invention.

As shown in FIG. 6D, in RRC of an asynchronous mobile station for supporting Hybrid ARQ type II / III, after initializing a call (631), receiving data (632) from the RLC and receiving the received data (632). It is determined whether is ARQ related information (633).

As a result of determination, when the received data is ARQ-related information, the received data is processed in a layer 1 transmission form (635) to distinguish processed sequence number, version number, and data. I) through a specific primitive (CPHY-HARQ-REQ) of Control SAP to Layer 1 (634).

As a result of the determination, when the received data is not ARQ related information, the process proceeds to the step 632 of receiving the data from the RLC after processing the corresponding operation according to the received data. do.

As described above, the present invention has been described assuming an asynchronous wireless communication system as the most preferred embodiment, but is not limited to this, and in the synchronous wireless communication system, respectively, data and side information are generated in the RLC for wireless This data and side information can be transmitted to the mobile station through one physical channel DPCH by transmitting the data and side information at the base station Node B through the network. Obviously, it should be seen as the same as the examples.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

According to the present invention as described above, the side information portion having the same information as the header of the data and the user data portion can be separated to adjust the coding rate (code rate) respectively, so that the error of the additional information portion The probability of occurrence can be reduced, and whether or not an error has occurred in the additional information part can be checked separately from the user data part, and the data can be processed first by checking the additional information part. There is an effect that can be performed stably.

Claims (25)

In the data transmission method when the hybrid ARQ type II / III method is applied for efficient data transmission in a wireless communication system, Medium Access Control Common (MAC-C), which handles the common channel portion in the Medium Access Control (MAC) layer, and MAC-D, which handles the end-user portion, If Medium Access Control Dedicated (hereinafter referred to as "MAC-D") is separated from each other and exists in different wireless networks, A first step of generating data and additional information in a radio link control (RLC) layer of the wireless network and transmitting the generated data and additional information to the MAC-D through a logical channel; A second step of transmitting data and additional information from the MAC-D to a Node B through a transmission channel; And A third step in which the base station Node B processes the data and additional information in a wireless transmission form and then multiplexes the data and the additional information to a mobile station through a physical channel; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. In the data transmission method when the hybrid ARQ type II / III method is applied for efficient data transmission in a wireless communication system, Medium Access Control Common (MAC-C), which handles the common channel portion in the Medium Access Control (MAC) layer, and MAC-D, which handles the end-user portion, When Medium Access Control Dedicated (hereinafter referred to as "MAC-D") is separated from each other and exists in the same wireless network, A first step of generating data and additional information in a radio link control (RLC) layer of the wireless network and transmitting the generated data and additional information to the MAC-D through a logical channel; A second step of transmitting data and additional information from the MAC-D to a Node B through a transmission channel; And A third step of processing data and additional information in the form of wireless transmission by the base station Node B and then multiplexing the data and additional information to a mobile station through a physical channel; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method according to claim 1 or 2, A fourth step of the mobile station interpreting the received data and the additional information to inform the wireless network of the state of the received data and requesting retransmission; And A fifth step in which the asynchronous radio network repeats the first to third steps in accordance with a request for retransmission from the mobile station; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system further comprising. The method of claim 3, wherein The wireless network, A data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system, which is substantially an asynchronous wireless network. The method of claim 4, wherein The fourth step, The mobile station (UE) stores the data portion of the received data in a layer1 buffer, and processes the additional information portion in the form of transmission to MAC-D to transmit the MAC-D of the mobile station through the transmission channel together with the data identifier. Transmitting to the sixth step; A seventh step in which the MAC-D of the mobile station processes the additional information received in Layer 1 in the form of RLC transmission and transmits the additional information to the RLC of the mobile station through a logical channel; An eighth step of interpreting the received data by the RLC of the mobile station and transmitting the received data to the RRC of the mobile station; A ninth step of processing the data received from the RLC of the mobile station by the RRC of the mobile station in the form of layer 1 and transmitting it to the layer 1; If the layer 1 of the mobile station corresponds to the information of the data in which the signal received from the RRC of the mobile station is stored, the stored channel is processed according to the received signal and processed in the form of MAC-D transmission to process the transmission channel. A tenth step of transmitting to the mobile station's MAC-D; An eleventh step of processing the received data by the MAC-D of the mobile station into RLC data and transmitting the received data to the RLC of the mobile station through a logical channel; And Step 12, wherein the RLC of the mobile station reports the state of the received data to the wireless network; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 5, The fifth step, The RLC of the wireless network determines whether to retransmit according to the report of the received mobile station, and in the case of retransmission, the hybrid automatic retransmission request 2/3 scheme is performed in the wideband wireless communication system. Data transmission method. The method of claim 4, wherein The logical channel is, Substantially, it is a dedicated traffic channel (DTCH) logical channel for transmitting the data to the MAC-D in the RLC layer data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system. The method of claim 7, wherein The logical channel is, Substantially, when the data is transmitted to the MAC-D through the DTCH logical channel in the RLC layer, the DTCH logical channel or dedicated control channel (DCCH) for transmitting the additional information to the MAC-D in parallel. A data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system, characterized in that the logical channel. The method of claim 8, The transmission channel, Substantially, the 2/3 scheme for hybrid automatic retransmission request in a broadband wireless communication system, characterized in that it is a dedicated CHannel (DCH) transmission channel for transmitting data and additional information to the base station (Node B) in the MAC-D. Data transmission method. The method of claim 9, The physical channel is, Substantially, it is a dedicated physical channel (DPCH) physical channel for transmitting data and additional information from the base station Node B to the mobile station. Transmission method. The method of claim 10, The first step is, A sixth step in which the RLC layer processes data received from an upper layer (or a network) and transmits the data to the MAC-D through the DTCH logical channel; And A seventh step in which the RLC layer makes additional information of the data processed in the sixth step and transmits the MAC-D through the DTCH logical channel or the DCCH logical channel in parallel when a data portion is transmitted to the MAC-D; step Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 11, The second step, An eighth step of the MAC-D processing the data portion received from the RLC layer in a form of a base station (Node B) transmission and transmitting the same to the base station (Node B) through the DCH transmission channel; And The MAC-D processes the additional information portion received from the RLC layer in the form of a base station (Node B) transmission and transmits it to the base station (Node B) through the DCH transmission channel. Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 11, The second step, Even when the MAC-D receives the data portion and the additional information portion together or separately in the RLC layer, the MAC-D processes the data portion and the additional information portion in the form of Node B transmission according to a higher layer control signal, and combines them into one signal. Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system, characterized in that for transmitting to the base station (Node B). The method of claim 12, The third step, The base station Node B processes the data and the additional information received from the MAC-D in the form of wireless transmission, and multiplexes and transmits the data to the mobile station (UE) for transmission on the DPCH physical channel. Data transmission method for hybrid automatic retransmission request 2/3 scheme in broadband wireless communication system. The method of claim 10, The data transmission process in the RLC layer of the wireless network, A seventh step of determining whether the data received at the upper layer is data to be made in accordance with the traffic data or the automatic retransmission request format; As a result of the determination in the seventh step, if the received data is data to be made according to the traffic data or the automatic retransmission request format, the received data is processed in the form of transmission data, and additional information of the received data is extracted and processed in the form of transmission data. An eighth step; A ninth step of transmitting data processed in a transmission form through the DTCH logical channel and transmitting additional information processed in a transmission form to the MAC-D through the DCCH logical channel, respectively; And As a result of the determination of the seventh step, if the received data is not data to be made in accordance with the traffic data or the automatic retransmission request format, the tenth step of processing the received data in the form of transmission data and transmitting the data to the MAC-D respectively; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 15, After performing the eighth step, the eleventh step of transmitting data and additional information processed in the transmission form to the MAC-D through the DTCH logical channel Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system further comprising. The method of claim 10, The data transmission process in the MAC-D of the wireless network, A seventh step of processing the data received from the RLC layer in the form of a base station (Node B) transmission, and transmitting the data processed in the form of transmission to the base station (Node B) through the DCH transmission channel; And When the control signal or the data portion and the data information portion of the upper layer are received together, the data portion and the data information portion are processed in the form of Node B transmission and are combined with one signal to be transmitted to the Node B. 8 steps Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 10, The data transmission process in the base station (Node B) of the wireless network, A seventh step of determining whether the data received from the MAC-D is data or additional information; An eighth step of multiplexing a result of processing the data and the additional information according to the determination result of the seventh step and transmitting the data and the additional information through the DPCH physical channel; And A ninth step of transmitting a multiplexed result to the mobile station (UE) through the DPCH physical channel; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 5, The data transmission process in Layer 1 of the mobile station, A thirteenth step of separating the data received from the wireless network into a data portion and an additional information portion; A fourteenth step of storing the separated data portion in a layer 1 buffer until there is a signal of a higher layer; A fifteenth step of processing the stored data according to the hierarchical signal when the information of the signal stored as the higher layer signal arrives; A sixteenth step of processing the processed data according to an upper layer signal in a MAC-D transmission form and transmitting the MAC-D through the DCH transmission channel; A seventeenth step of processing the separated additional information in the form of MAC-D transmission and transmitting it to the MAC-D through the DCH transmission channel together with a data identifier; Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 5, The data transmission process in the MAC-D of the mobile station, A thirteenth step of processing data received from Layer 1 of the mobile station in an RLC transmission form; After performing the thirteenth step, in the case where the data processed in the RLC transmission form corresponds to additional information, transmitting the RLC of the mobile station through the DTCH logical channel or the DCCH logical channel; And After performing the thirteenth step, in the case where the data processed in the RLC transmission form corresponds to user data, a fifteenth step of transmitting to the RLC of the mobile station through the DTCH logical channel Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 5, The data transmission process in the RLC of the mobile station, A thirteenth step of determining whether data received from the mobile station MAC-D is a data portion or an additional information portion; A fourteenth step of processing the received data part in a network (or higher layer) transmission form if the received data is a data part as a result of the determination of the thirteenth step; A fifteenth step of transmitting a data portion processed in a transmission form to a network (or a higher layer); Making a state of the received data portion in the form of RLC transmission of the wireless network and transmitting it to the RLC of the wireless network through the mobile station's MAC-D, Layer 1; A seventeenth step of interpreting the received additional information part and extracting the necessary part if the received data is the additional information part as a result of the determination of the thirteenth step; An eighteenth step of processing the necessary part extracted from the additional information and the data discriminator received through the MAC-D of the mobile station in an RRC transmission form; And 19th step of transmitting data processed in RRC transmission form to RRC of the mobile station Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. The method of claim 5, The data transmission process in the RRC of the mobile station, A thirteenth step of determining whether data received from the RLC of the mobile station corresponds to an ARQ; And According to the determination result of the thirteenth step, a fourteenth step of processing the portion corresponding to the ARQ in the form of layer 1 (transmission layer 1) to transmit data to the layer (layer 1) of the mobile station Data transmission method for a hybrid automatic retransmission request 2/3 scheme in a broadband wireless communication system comprising a. In a wireless communication system equipped with a processor for data transmission in hybrid ARQ type II / III application, which requires hybrid automatic retransmission for efficient data transmission, Medium Access Control Common (MAC-C), which handles the common channel portion in the Medium Access Control (MAC) layer, and MAC-D, which handles the end-user portion, If Medium Access Control Dedicated (hereinafter referred to as "MAC-D") is separated from each other and exists in different wireless networks, A first function of generating data and additional information at a radio link control (RLC) layer of the wireless network and transmitting the generated data and additional information to the MAC-D through a logical channel; A second function of transmitting data and additional information in the MAC-D to a Node B through a transmission channel; And A third function of processing the data and additional information in the form of wireless transmission by the base station Node B and then multiplexing the data and the additional information to a mobile station through a physical channel A computer-readable recording medium having recorded thereon a program for realizing this. In a wireless communication system equipped with a processor for data transmission in hybrid ARQ type II / III application, which requires hybrid automatic retransmission for efficient data transmission, Medium Access Control Common (MAC-C), which handles the common channel portion in the Medium Access Control (MAC) layer, and MAC-D, which handles the end-user portion, When Medium Access Control Dedicated (hereinafter referred to as "MAC-D") is separated from each other and exists in the same wireless network, A first function of generating data and additional information at a radio link control (RLC) layer of the wireless network and transmitting the generated data and additional information to the MAC-D through a logical channel; A second function of transmitting data and additional information in the MAC-D to a Node B through a transmission channel; And A third function of processing data and additional information in a form of wireless transmission at the base station Node B and then multiplexing the data and additional information to a mobile station through a physical channel A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 23 or 24, A fourth function of the mobile station interpreting the received data and the additional information to inform the wireless network of the status of the received data and requesting retransmission; And A fifth function of repeatedly performing the first to third steps by the asynchronous radio network according to a retransmission request from the mobile station A computer-readable recording medium that records a program for further realization.